Imagine a Venn diagram: one circle includes people who like gory, action-packed movies with nasty villains, damsels in distress, and dashing heroes who save the day. Another circle includes those who like historical detail (like watching a character making arrows from bamboo in the middle of a chase scene), and are comfortable with subtitles. Anyone who ends up in the center of this diagram will love this swashbuckling movie about warring dynasties in 1623 Korea.